Chase adjuster for spinning frames



Jan. 26, 1932.. N 1,842,565

CHASE ADJUSTER FOR SPINNING FRAMES Filed Sept. 4. 1930 2 Sheets-Sheet l \nvenTor. Henry A. Owen Jan. 26, 1932. OWEN 1,842,565

CHASE ADJUSTER FOR SPINNING FRAMES Filed Sept. 4, 3,930 2 Sheets-$heet 2 F 2 m :6 l7 I Patented Jan. .26, 1933?;

UNITE ENRY A. OWEN, OF FOXIBOBO, MASEACHUSETTS, ASSIGNQR TO DAVIS & FUR/BER. MA- CHINE COMPANY, OF NORTH ANDOVER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS CHASE ADJUSTER FOR SPINNING FRAMES Application filed. September 4, 1930. Serial No. 479,707.

This invention relates to a ring spinning frame for effecting the filling wind upon bobbins as the yarn is spun or wound thereon. In the filling wind, the yarn is laid on the bobbin in successive conical layers. In a filling wound bobbin, the yarn is unwound from the bobbin by pulling it off in a general line with the axis of the bobbin over the tip so that these conical layers are successively unwound. This is the operation which takes place during the weaving operation when the bobbin is used in the shuttle of the loom.

The present invention has to do with the builder motion of the spinning frame by means of which the relative movement between the spindles and the ring rail is elfected to produce this filling wind. The angle of the conical layers of the mass of yarn wound on the bobbin is determined by the length of the traverse or chase given by the builder motion. The ideal chase on a filling wound bobbin is one which is as short as possible without being so short as to allow the yarn to slub off during the operation of unwinding 1 the bobbin. If the yarn thus slubs off, there is extensive waste and unsatisfactory work. But the shorter the chase or the traverse, the more yarn can be wound on the bobbin, and consequently the length of the traverse or chase should vary with the different sizes and qualities of yarn.

It is the object of the present invention to provide a spinning frame in which the traverse or chase may be adjusted to correspond with the requirements of widely different types of yarn and thus enable the bobbins to be wound with the maximum amount of yarn under each condition, thus reducing the operating costs and placing the ring position of the nose or smaller end of the conical. layer with respect to the shoulder.

it is a further object of the invention, therefore, to provide an adjustment by means of which the position for winding the sl'ioulder is not altered.

More specifically the invention has for its object to provide for the adjustment of the length of the traverse or chase in a builder motion which comprises a cam-operated lever for eii'ecting the relative movement between the ring rail and the spindles.

The nature and objects of the invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the claims.

The invention is shown as embodied in a builder motion of conventional design having a cam-operated lever which controls the relative movement of the ring "ail and spindles to produce the required filling wind upon bobbins carried by the spindles. In its preferred form the invention resides in providing for the adjustment of the fulcrum of the lever without altering the position of the lever when in the position for winding the shoulde-r.

In the drawings:

Fig. 1 is a cross sectional View through a spinning frame illustrating a preferred embodiment of the present invention.

Fig. 2 is a sectional view on line 22 of Fig. 1.

Fig. 3 is a cross sectional view on line 33 of 1.

While the invention is equally applicable to a spinning frame in which the ring rail is moved with respect to the spindles, or to one in which the spindles are moved with respect to the ring rail, it is here illustrated in connection with the latter type, such as shown in my co-pending application, Serial No. 4&3,- 015, now Patent Number 1,824,788, issued on Sept. 29, 1931.

The spindles 1 are mounted on spindle rails 2 which support the usual two rows of spin dles. The rails 53 are mounted on the ends of a plurality of vertically movable supports 3. The supports 3 are guided by means of a series of vertical uide rods 4 which Cir -= on the bobbin.

pass through suitable bearings in the ends thereof. As the spinning operation progresses, the spindles are moved through their respective rings on the ring rail by means of the builder motion.

The traverse of the builder motion is trans mitted to the spindles through the supports 3 by means of a suitable flexible connection such as the chain 5. The chain 5 extends from the builder motion upwardly and over a drum 6 secured to a shaft 7. The shaft 7 is retatably mounted in, and extends transversu 1y across, the machine substantially parallel to the supports 3. The shaft is provided with drums 8 and 9 at itsouter' ends to which is secured one end of the chains 10 and 11. The chains 10 and 11 pass over idler pulleys 12 and 13 rotatably secured on the frame and are secured at their other ends to downwardly extending flexible connecting members 14- and 15 which are secured to the support 3. E:;- tensions 16 and 17 of the chains 10 and 11 are continued throughout substantially the length of the machine and are connected to each of the supports 3 in the same manner as above described in connection with the first of the supports 3 shown in the drawings. The chain 5 passes part way around the drum 6 and is secured thereto at its end. As the builder motion functions, the shaft 7 is rotated which in turn raises or lowers the spindle rails by means of the various connections leading from the chains 10 and 11 to the spindle rail supports 3.

The builder motion comprises a substantially horizontally disposed lever 18 fulcrumed at 19 on a suitable support such as the side frame 20 of the machine. The lever 18 is actuated by the usual cam 21 mounted on a shaft 22 rotatably mounted in a suitable bearing in the side frame 20. The shaft is provided with a gear 23 driven by a worm 24 upon the end of a vertical shaft 25. The shaft 25 is driven from any desired moving part of the spinning frame. As shown herein, the shaft 25 is driven from the draft roll 26 by means of a train of gears 27. The cam 21 rides upon a follower 28 which rotates the lever 18 about its fulcrum point to produce the traverse or chase of the yarn upon the bobbin.

As each layer of yarn is wound upon the bobbins, the spindle must be moved downwardly a sufficient distance to enable the succeeding layer to assume its proper position A pick motion of a usual type is employed herein to accomplish this motion of the builder mechanism. The chain 5 is wound at its lower end about a drum 29 and is secured at its end thereto. The drum 29 is mounted upon a short shaft 30 to which is secured a gear 31. The shaft 30 is mounted in the outer end of the lever 18 in such position that the chain 5 will leave the drum 29 at a point a substantial distance away from the follower 28. A worm 32 is .mounted on a substantially horizontal shaft 33 which in turn is rotatably mounted in the lever 18 in such position that the worm 32 meshes with the gear 31. Upon the outer end of the shaft 33 is secured a ratchet wheel 34, the teeth of which are engaged by a pawl 35 mounted in a reciprocating lever 36 rotatably mounted upon the shaft 33.

As the builder lever 18 nears the extremity of its downward movement, an arm 37 projecting from the lever 36 engages afixed stop 38, thus causing the lever 36 to swing about a small arc. Inasmuch as the pawl 35 is mounted upon the lever 36, such motion is transmitted by means 9f the pawl 35 to the ratchet Wheel 3A which in turn rotates the drum 29 a slight amount through the Worm 32 and gear 31. Themechanism is so adjusted that the proper movement of the drum 29 is imparted by the stop 38 on each downward movement of the lever 18. After a complete traverse or chase has been laid upon the bobbin, the mechanism functions to unwind the chain 5 from the drum 29 a sufficient amount to lower the spindles into the proper position for the bobbins to receive the succeeding layer of yarn, all of which is old in the art and forms no part of the present invention.

The length of the traverse or chase in this invention is adjusted as required, in the preferred form illustrated, by shifting the fulcrum of the builder 18 and this is done without disturbing the position for winding the shoulder. The builder lever is in the position for winding the shoulder when the high part of the cam 21 engages the follower 28 of the lever. Consequently, if the fulcrum point of the lever is adjusted when the lever is in this position and without disturbing this position of the lever, there will be no change in the position of the shoulder and the adjustment of the length of the traverse will be effected by shifting the position of the nose of the wind.

This result is secured, in the preferred construction illustrated, by providing in the supportfor the fulcrum of the lever, such as the side frame of the loom, and in the lever itself slots which coincide throughout their length when the builder lever is in the position for Ii 15 Winding the shoulder and by shifting the fulcrum along these slots when in this position as may be required to lengthen or shorten the chase or traverse.

The builder lever 18 is shown as provided 1 of a collar 4-8 secured to the stud ll by means of a pin 49. The stud. all is provided with an integral collar 50 which bears against the inner face of the side frame 20. The section 51 of the stud passes through the slot 42 in the side frame 20 and is provided at its end with a threaded portion 52 having a nut 53 thereon. The stud rl may be fixed, there fore, in position relatively to the side frame 20 by tightening the nut 53 upon the outer face of the end frame 20.

When it is desired to change the position of the fulcrum point 19, the bolts 45 in the lock 4:0 and the nut 53 on the end of the stud ell must be loosened. At this time the lever 18 is entirely free to move longitudinally. In order to prevent such motion during the ad justing process, the lever 18 is notched at 54!; and a stud 56 is so positioned below the notch 54; that when the notch engages the stud, the relative longitudinal position of the lever 18 and the axis of the cam 21 is normal. To effect the engagement of the notch and stud, the machine is turned over until the follower .28 is within a short distance of the high point on the cam 21, at which time a pawl 57 is thrown into engagement with a ratchet wheel lined upon the shaft 7. The pawl 57 functions to prevent the spindles from dropping by gravity. The shaft 33 is then manually operated in a direction to unwind the chain from its drum 29 until the notch 54 is resting on the stop 56.

T he slot 39 in the lever 18 and the slot 42 in the side frame at this time coincide. The movement of the block may thus be accomplished without causing any longitudinal or radial movement of the lever 18 or any disturbance of its position, which is that po ion assumed in winding the shoulder. Moving the block A0 to the left shortens the effective length of the lever thereby causing the cam to guide the lever through a greater angle. Consequently, the outer end of the lever to which the chain 5 is attached has a greater linear motion thereby increasing the chase. li'loving the block 40 to the right decreases the length of the chase. In this manner the chase of the mechanism may be readily adjusted with the assurance that the lever 18 will always assume the same position at the end of its downward movement regardless of the setting of its fulcrum point.

When the proper length of chase is obtained, the bolts 45 are tightened thus securing the block to upon the lever and the nut 53 is tightened to fix the stud 41 in the side frame 20. The shaft 33 is then rotated in a direction to take up the slack in the chain 5 and raise the follower 28 into engagement with the cam 21. After the machine has been started, its initial movement causes the follower 28 to ride over the high point of the cam thus slightly raising the spindle rails which relieves the pressure upon the pawl 57 and permits the operator to throw it out of engagement with the ratchet wheel 58. The machine is then ready to resume the spinning operation.

A very simple and effective means is thereby provided to obtain the desired adjustment of the chase to meet the particular requirements of any spinning operation.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is:

1. A spinning frame comprising a plurality of spindles, a ring rail, a builder motion operable to effect the relative movement between the spindles and the ring rail required to produce a filling wind, and means operable by a single adjustment to change the length of the traverse or chase of said builder motion without disturbing its position for winding the shoulder.

2. A spinning frame comprising a plurality of spindles, a ring rail, a builder motion including a cam and a lever actuated thereby operable to effect a relative movement between the spindles and the ring rail required to produce a filling wind, and means for shifting the fulcrum of the lever without altering the position the lever assumes when winding the shoulder thereby to adjust the length of the traverse or chase without disturbin the position of the lever for winding the slioulder.

3. A spinning frame comprising a plurality of spindles, a ring rail, a builder motion including a cam and a lever actuated thereby operable to efiect a relative movement be tween the spindles and the ring rail requlred to produce a filling wind, a support for the lever, slots in said lever and its support coinciding when the lever is in the position for winding the shoulder, and a fulcrum for the lever adjustable along said slots whereby the length of the traverse or chase may be adjusted without disturbing the position for winding the shoulder.

l. A spinning frame comprising a plurality of spindles, a ring rail, a builder motion including a cam and a lever actuated thereby operable to effect a relative movement between the spindles and the ring rail required to produce a filling wind, a support for the lever, slots in said lever and its support coinciding when the lever is in the position for winding the shoulder, a fulcrum block, means for adjusting the fulcrum block longitudinal- 1y of both of said slots, and a fulcrum for the lever on said fulcrum block whereby -the length of the traverse or chase may be adjusted without disturbing the position for Winding the shoulder.

In testimony whereof, I'have signed my name to this specification.

HENRY A. OWEN. 

